Elsewhere in the women's draw, the tournament's last unseeded player was knocked out, after Russia's Daria Kasatkina lost 6-3, 7-6 (5) to No. 16 seed Caroline Wozniacki.

Though the Russian saved three match points in the second set tiebreak, Wozniacki had enough in the tank to see her off, and the Dane now moves on to a semifinal clash with number four seed Naomi Osaka, who rebounded from a set down to knock out 5th-seeded Bianca Andreescu 5-7, 6-3, 6-4 in the first meeting between the two young rising stars on the WTA tour.

Andreescu was the tighter player out of the gate, breaking her opponent twice on the way to building up a 5-1 lead to serve for the set only to see a series of unforced errors off the forehand side allowing Osaka the space to respond with two breaks of her own to claw to 5-all. The Canadian would pull it together with consistent shooting down the line to get another crucial break and serve out the first set.

Although was Andreescu who drew first blood in the second, going up a break at 2-1, Osaka would eek out an advantage off her stellar forehand, getting two breaks of her own on the way to forcing a decider.

The third set was a well-matched affair. The two traded breaks to go 3-all, but Osaka would go one more up at 5-4 to serve for the match, where the two would fight back and forth at deuce before Osaka sealed the marathon match with an ace to end the two hour, 15 minute encounter.

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